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Other Assets (Derivative Instruments Narrative) (Details ) $ in Millions | 6 Months Ended
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Jun. 30, 2020 USD ($)
Derivative [Line Items] |
Derivative, terminated amount | $ 4,100.0
Swap | Hedging |
Derivative [Line Items] |
Reclassification of hedge gain (loss) from AOCI | (49.9)
Loss on derivative | $ (7.2)

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